The value of vRtrLdpNgBfdOnLspPrefixOperState indicates the operational state of the prefix for use by BFD on LDP LSPs. Code points: invalid - Invalid state (unexpected). noMatch - The prefix has not been matched to a prefix list. disabled - The LSP BFD configuration is not enabled, or there is no tunnel for the prefix. srcAddrMissing - There is no LDP LSRID for the address family. srcAddrMismatch - The address family of the prefix doesn't match the address family of the source address configured in the matched LSP-BFD prefix list. up - LSP BFD is operationally up for the prefix. down - LSP BFD is operationally down for the prefix, and the configured failure-action (i.e. vRtrLdpNgBfdOnLspPfxListFailAct) is 'down(1)'. downTrapOnly - LSP BFD is operationally down for the prefix, and the configured failure-action (i.e. vRtrLdpNgBfdOnLspPfxListFailAct) is 'none(0)'. srcDstAddrSame - The address of the prefix is the same as the source address.